Remove the `device_role` & `device_role_id` filters for devices

[jeremystretch]

Proposed Changes

Remove the following filters for devices:

• device_role (replaced by role)
• device_role_id (replaced by role_id)

Justification

The device_role field on the Device model was renamed to role under #6391 in NetBox v3.6. These filters were retained for backward compatibility through v3.7 but are now obsolete.

Impact

Any API consumers still using these filters will need to be updated to use the new filters listed above.